—________. I'll be as quiet as a mouse.

A. Yes, I don't

B. No, I won't

C. No, I will

D. Yes, I will

A. Each at one time

B. One by one time

C. One for each time

D. One at a time

—________ . He is a physics teacher in a high school.

A. No, he isn't

B. No, he is

C. Yes, he isn't

D. Yes, he does

A. don't you

B. will you

C. mustn't you

D. aren't you

A. do I

B. don't I

C. did you

D. didn't you

A. isn't it

B. didn't he

C. is it

D. did it

—Not again! You ________ your keys.

A. always lose

B. always lost

C. were always losing

D. are always losing

—She is not very clever, but I like her ________ .

A. in my opinion

B. more or less

C. all the same

D. in that case

—________. He seldom wears new clothes.

A. Yes, he doesn't

B. No, he does

C. Yes, he does

D. No, he doesn't

A. needn't you

B. don't you

C. must you

D. mustn't you